Henry Dobson was a recurring character on House during the early part of the fourth season. Known to Gregory House as "Ridiculously Old Fraud", "Scooter" or "Bosley" was one of the forty applicants who applied for the three open fellowship positions at the start of Season 4. He survived to the last seven, being eliminated at the end of the episode Guardian Angels.

Henry was, by far, the oldest of the applicants (although many other applicants, such as Chris Taub, were in their forties). He sat at the back of the room and made many diagnostic suggestions to bring attention to himself. He was eventually assigned by House to do an echocardiogram with two other doctors, which proved to be his eventual undoing.

"Twenty-one. Unless it's relevant."

―Dobson's stock response to House's questions about how old he was.

Dobson's first task was to do an environmental scan with Dr. Mason and Dr. Ashka. Originally, the two younger doctors decided to break in through a second-floor window and leave the older Dobson behind. However, Dobson surprised them by opening the window from the inside, telling them he lied to the landlord about being the patient's uncle to gain access.

House was impressed by Henry's medical knowledge, but was intrigued by the fact that when he was assigned a medical procedure, he asked one of the younger doctors to do it for him. At the time, he claimed that he wouldn't improve his chances by showing he could do one of another of the hundreds of echocardiograms he's done in his life. However, by the end of The Right Stuff, House realized that Henry was avoiding doing procedures on patients because he had never done them before - he had never graduated medical school.

Henry admitted he had spent thirty years as an admissions officer at Columbia University's medical school. He had absorbed a great deal of medical knowledge from auditing classes, but never managed to get a degree. Surprisingly, House agreed to keep him on and promised him a consultant job under his supervision if he survived.

―Henry expresses disappointment that he will be given the title of "assistant".

Henry thrived even though it was finally revealed he was not a real doctor. Despite the protests and challenges from the other applicants (particularly Taub, with whom Henry had an antagonistic relationship), Henry was usually right, and House usually agreed with and supported him.

However, at the end of Guardian Angels, House decided that Henry had to be the one to be fired. All Henry brought to the table was immense knowledge of medicine, but as House pointed out, House already had that skill. Henry's diagnoses of patients usually agreed with House's, but House's preferred diagnostic method is to have his team members disagree with him. Henry summed up the situation by saying, "You don't need someone to tell you what you're already thinking," to which House agreed.

Henry took his firing well and promised to call James Wilson if he felt like hanging out with House. From a personal standpoint, Henry is one of the few people in the series who House has ever expressed wanting to form a friendship with, and the only fellowship candidate (other than Amber Volakis) who House expressed any level of remorse toward upon their dismissal.